libmedia: move AudioParameter out of AudioSystem

Change-Id: I9eb7e002d141936258050d4fa4f0ccd8202bfc54
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/media/libmedia/Android.mk b/media/libmedia/Android.mk
index ca7441a..121e38a 100644
--- a/media/libmedia/Android.mk
+++ b/media/libmedia/Android.mk
@@ -1,4 +1,14 @@
 LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+    AudioParameter.cpp
+LOCAL_MODULE:= libmedia_helper
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_STATIC_LIBRARY)
+
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
@@ -41,6 +51,8 @@
         libcamera_client libstagefright_foundation \
         libgui
 
+LOCAL_WHOLE_STATIC_LIBRARY := libmedia_helper
+
 LOCAL_MODULE:= libmedia
 
 ifeq ($(TARGET_OS)-$(TARGET_SIMULATOR),linux-true)